Lubricated gate valve



IN VEN TOR. HARRY E. EIFEBHT.

A TTORNEK NOV. 13, 1934/. H G, SPECHT LUBRICATED GATE VALVE Filed Deo. 2, 1950 Patented Nov. 13, 1934 l 1,980,7ss` LUBRICATD GATE VALVE Harry G. Specht,'Montclair, N. J., lassignor to Eastwood Wire Corporation, Belleville, N. J., a corporation of New Jersey .pplication December 2, 1930, Serial No. 499,480

4 Claims. (Cl. 251-59) The present invention relates to a lubricated a jam nut 29. Obviously turning of the hand gate valve, and has for an object to provide a Wheel and nut in one or the'other directionsraises valve of this character in which lubricant may or lowers the valve. I

e be applied to the valve seat while the valve gate The valve is provided at each side with a seatis in closed position, and in which such lubricant ing ring 30, preferably of bronze, suitably secured 60 may be applied under pressure, so that in the to the valve as by SWaging; aS at 31, and Within event that the valve becomes stuck the pressure this ring there is provided a circumferential lubof the lubricant may be utilized to freerit, Anricant groove 32. The valve seats which close the other object is to provide a valve in which lubrigrooves 32 are in the form of threaded rings,

19 cant willv be distributed over the valve seat and preferably of bronze, these rings having a large 65 which will be carried and retained by the valve diameter threaded portion 33 and a smaller diupon opening the valve, so that there will be ameter threaded extension portion 34, and within relatively small loss of lubricant from washing the Casing, and in relation to be closed and out when the valve is open. It is a further object sealed by SCreWIlg in 0f the threaded DOIiJiOnS to provide a lubricated valve seat which will form 33 and 34, theles provided circumferential 70 a, positive and effect-,112,1 seal against, leakage, lubricant chamber 35. A series of ports 36 are With the above and other'objects'jn View an pIOVided in the .rings 12 establishing Communiembodiment of the invention is shown in the cation at a Suitable number 0f spaced Points accompanying drawing, and this embodiment between the chambers 35 and circumferential 23 will be hereinafter more fully described with rcfgrooves 37 in the valve seating surfacesy these 75 erence thereto and the invention will be nally grooves 37 being in register in the closed posipointed out in the claims, tion of the valve, with the circumferential In the drawing; grooves 32 of the valve. The grooves 32' are of Fig. 1 is an end elevation of a valve, according larger extent and capacity than the grooves 3'?. to the present embodiment of the invention. and are adapted DOH Opening 0f the Valve t0 80 Fig. 2 is a vertical sectional view thereof. retain the lubricant therein and through capillary i Fig. 3 is an enlarged vertical sectional' view action to draw some of the lubricant from the of the lower end portion. smaller 'grooves 37 during the initial opening Fig. 4 is a detail Afragmentary sectional view movement.

showing one form of lubricant groove employed. Duets 38-38 in the easing COIlIleC'f the reSpeC- 85 Fig. 5 is a similar view showing a modied form tive chambers 35 withcheck-valve ttings 39--39 of lubricant groove. secured in the casing at.each side, and which Similar reference characters indicate correare connected by tubes 40-40 to the lower end sponding parts throughout the several gures of of a suitable lubricant gun 41, secured upon the the drawing. side/of the casing by a bracket 42.

Referring to the drawing, the gate valve illus- The lubricant in the grooves 32 effectually seals trated is of conventional type, and comprises a the Valve against leakage. at the Same time maincasing 10, having a valve 11 and converging valve taining the seating surfaces in such lubricated seat rings 12-12, the valve being xedly concondition that the valve may be readily opened,

nected to the lower end of a spindle 13, as at 14, Should it become stuck the lubricant may be 95 and adapted in the open position to be moved subjected to pressure which will free the seat. s upwardly into a chamber 15. Vertical guide ribs UDCH Closing of the Valve any lubricant which or tracks 16 are provided at each side of the may have become Washed out is readily renewed casing which are engaged byL lugs 17 formed on by Operation 0f the gun 41.

the sides of valve. The spindle is non-rotatable In Fig. 4 the gIOOVe 32 is shown as having out- 100 and moves through a packing gland 18 and a Wardly divergent side walls while in the form bushing 19 at the upper end of the casing, the illustrated in Fig. 5 a modied form of groove bushing 19 adapted to be tightened upon the 328L is employed having inwardly diverging or packing gland by means of nuts 20 provided on undercut side Walls. 4

hinged bolts 21 engaged in cut-outs 22 in the I have illustrated and described preferred and 105 iiange 23 of said bushing. The upper end of the satisfactory embodiments of my invention, but e spindle is provided with a spiral thread 24, enit will be -obvious that changes may be made gaged in a rotary nut 25 mounted in the bearing d therein within the spirit and scope thereof, as end 26 of a yoke 27 superimposed on the casing, defined in the appended claims.

and to which nut a hand Wheel 28 is secured by Having thus described my -invention what I 110 claim and desire to secure by Letters Patent is:

1. In a valve, a valve body, a valve seat in said body, a valve adapted to engagesaid seat, a lubricant channel in said valve closed by said seat in the closed position of said valve, said lubricant channel having inwardly 'diverging side Walls adapted to retain lubricant during the opening of the valve and in the open position of the valve v and when out of register with said valve seat.

2. In a gate valve, a valve body, valve seating means in said body comprising a pair of opposed valve seats, each having a continuous circumferential lubricant channel, a multiple-faced valve having seating surfaces at each side adapted to' 3. In a gate valve, a valve body, valve seating means in said body comprising a pair yof opposed valve seats, each having a continuous circumferential lubricant channel, a multiple-faced valve having seating surfaces at each side adapted to engage said seats of the body and each having a continuous circumferential lubricant channel adapted to register with said lubricant channels of the seats in the closed position of the valve, and lubricant conducting means communicating with said channels, said channels of the valve being relatively larger in exposed surface area than said channels of the seats and having inwardly diverging side walls, whereby a larger amount of lubricant remains in said channels of the valve during the opening of the valve than remains in said channels ofthe valve seats.

4. Ina gate valve, a valve body, valve seating means in said body comprising a pair of opposed valve seats, each having a continuous circumferential lubricant channel, a multiple-faced valve having seating surfaces at each side adapted to engage said seats of the body and each having a continuous circumferential lubricant channel adapted to register with said lubricant channels of the seats inthe closed position of the valve, and lubricant conducting means communicating with said channels, said channels of the valve being relatively larger in exposed surface area than said channels of the seats and having inwardly diverging side walls, whereby a larger 'amount of lubricant remains in said channels of the valve during the opening of the valve than remains in said channels of the valve seats, the edges of said channels of the valve seats being ,spaced from and between the edges ofsaid channels of the valve.

HARRY G. SPECHT. 

